Basic Civil & Mechanical Engineering: UNIT IV: d. Hydraulic Turbines
Hydraulic Turbines
Classification - Basic Mechanical Engineering
Hydraulic Turbines: Hydraulic turbines are defined as hydraulic machines which convert hydraulic energy (energy possessed by water) into mechanical energy. In other words, hydraulic turbines absorb the energy in falling water and make it available for useful work.
UNIT – IV
Chapter - 14
HYDRAULIC TURBINES
HYDRAULIC PRIME MOVERS
Hydraulic
Prime Mover is a device by which the potential and kinetic energy of water may
be converted into mechanical work. It requires a continuous supply of water.
Hence, there should be a storage of water in a dam. The dam will maintain the
supply of water in dry seasons too. The water is taken from a higher level by means
of penstock pipes to the prime mover. Examples: Water wheels (obsolete) and
Hydraulic (Water) Turbines.
Hydraulic
Turbines: Hydraulic turbines are defined as
hydraulic machines which convert hydraulic energy (energy possessed by water)
into mechanical energy. In other words, hydraulic turbines absorb the energy in
falling water and make it available for useful work.
Hydro-Electric
Power: The mechanical energy produced by the hydraulic
turbine is used in running an electric generator. The generator is directly
coupled to the shaft of the turbine. Thus, the mechanical energy is converted
into electrical energy. The electric power which is obtained from the hydraulic
energy is known as Hydro-Electric Power or Hydel Power.
1. CLASSIFICATION OF HYDRAULIC TURBINES
The
hydraulic turbines are classified as follows:
1.
According to the Type of Energy at Inlet of the Turbine
(a)
Impulse Turbine and (b) Reaction Turbine
2.
According to the Direction of Flow of Water
(a)
Tangential Flow turbine: If the water flows along the tangent of the wheel
(runner), the turbine is called Tangential Flow Turbine.
(b)
Radial Flow Turbine: If the water flows in the radial direction through the
runner, the turbine is called Radial Flow Turbine. It may be an inward flow or
an outward flow turbine.
(c)
Axial Flow Turbine: If the water flows through the runner parallel to the axis
of the turbine, it is known as Axial Flow Turbine.
3.
According to the Head at the Inlet of the Turbine
(a)
High Head Turbine
(b)
Medium Head Turbine
(c)
Low Head Turbine
Basic Civil & Mechanical Engineering: UNIT IV: d. Hydraulic Turbines : Tag: : Classification - Basic Mechanical Engineering - Hydraulic Turbines
Basic Civil & Mechanical Engineering: UNIT IV: d. Hydraulic Turbines
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Basic Civil and Mechanical Engineering
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